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The dead-time, the load degree, or the resonate inductance and capacitance all would affect the phase-shifted full-bridge PWM converter to implement ZVS. In this paper, emphasize research on the influence of the dead-time. Analyse the switch process of the different dead-time, the formula of the optimal dead-time, and the experiment results are also given.
A dual mode time-sharing inverter has higher efficiency than other type grid-connected inverter due to only one power stage of it working in high frequency state at any time. In this paper, small signal modeling of this inverter is carried out, which reveals that the control-to-grid current transfer function of this inverter has a right half plane zero at low frequency during the “Boost” operating...
In this paper, a new three-phase Quasi-Soft-Switching DC/AC inverter is proposed for reducing the switching losses and raising the reliability of the inverter. For the most of main switches of this inverter, soft switching condition is achieved by a simple auxiliary circuit consisted of a switch, a diode, and an inductor which is different from that of the traditional resonant soft-switching inverter...
The dual mode time-sharing photovoltaic (PV) inverter is generally of higher efficiency compared to other types because only one power stage operates in the high switching frequency state at any time. In this paper, small-signal-model comparison was made between the conventional dual mode time-sharing inverter and the proposed dual mode time-sharing cascaded inverter. It has been revealed with modeling...
A three-phase three-wire shunt active power filter (APF) suitable for parallel operation is proposed in this paper to overcome difficulties in the field of high power applications. This APF can operate independently and compensate the load harmonic current according to its own capacity-limitation. Furthermore, the output current of each APF is optimized so that the APF with large capacity compensates...
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